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leva [86]
2 years ago
9

I need help this is homework that’s due today and I am very confused

Mathematics
1 answer:
AnnyKZ [126]2 years ago
5 0
Th awnser is 19 because the area of is 19
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In a certain community, 36 percent of the families own a dog and 22 percent of the families that own a dog also own a cat. In ad
zysi [14]

Answer:  a) 0.0792   b) 0.264

Step-by-step explanation:

Let Event D = Families own a dog .

Event C = families own a cat .

Given : Probability that families own a dog : P(D)=0.36

Probability that families own a dog also own a cat : P(C|D)=0.22

Probability that families own a cat : P(C)= 0.30

a) Formula to find conditional probability :

P(B|A)=\dfrac{P(A\cap B)}{P(A)}\\\\\Rightarrow P(A\cap B)=P(B|A)\times P(A)   (1)

Similarly ,

P(C\cap D)=P(C|D)\times P(D)\\\\=0.22\times0.36=0.0792

Hence, the probability that a randomly selected family owns both a dog and a cat : 0.0792

b) Again, using (2)

P(D|C)=\dfrac{P(C\cap D)}{P(C)}\\\\=\dfrac{0.0792}{0.30}=0.264

Hence, the conditional probability that a randomly selected family owns a dog given that it owns a cat = 0.264

5 0
3 years ago
Ericka observed the total variation in the water level over 6.2 years to be −13.64 mm. She compared this to the average annual t
vekshin1

Answer:

In the area that she observed, the water level fell 13.64mm over 6.4 years, for an average annual rate of change of: -13.64 ÷ 6.2 = -2.2 mm/ year.

8 0
3 years ago
430 in scientific notation would be _____.
Kipish [7]
4.3 x 10 to the power of 2
3 0
3 years ago
The picture this is math 1 for apex learning
noname [10]

Answer:

C.

Step-by-step explanation:

(f+g)(x) ➡ f(x) + g(x)

x/2 - 2 + 2x^2 + x - 3 = 2x^2 + 3x/2 -5

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3 years ago
Find the measure of the missing angle (a)
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Just subtract of 90 degrees and you get 68
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3 years ago
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